/* Copyright (c) 2021, LiWangQian<liwangqian@huawei.com> All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 *    conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 *    of conditions and the following disclaimer in the documentation and/or other materials
 *    provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "cpplua/tool/symbol/function_type.h"
#include <vector>

CPPLUA_NS_BEGIN
namespace tool::__detail {

struct function_context {
    std::vector<symbol *> params_;
    std::vector<symbol *> returns_;
};

function_type::~function_type()
{
    delete ctx;
}

function_type::function_type(scope *parent, uint32_t depth)
    : local_scope{parent, depth}
{
    // nop
}

void function_type::add_param(const string_t &name, symbol *s)
{
    ctx->params_.push_back(s);
    define(name, s);
}

// todo
void function_type::add_return(uint32_t index, symbol *s)
{
    if (index < ctx->returns_.size()) {
        ctx->returns_[index] = s;
        return;
    }

    ctx->returns_.resize(index + 1);
    ctx->returns_[index] = s;
}

const char *function_type::type_name() const noexcept
{
    return "function";
}

} // namespace tool::__detail
CPPLUA_NS_END
